possibly pregnant??

for the past three weeks I have been beyond nausicated, have thrown up in my mouth a handful of times but nothing ever out of my mouth. my boobs hurt and ache my nipples hurt to the touch. my boobs feel very heavy. my back is killing me I have bad a constant headache, and will have on and off cramps throughout the day. my period was supposed to come on the tenth. it came incredibly light, completely out of the normal. very dark blood and not a lot of it. and it lasted 1.5 days. not it's gone and I still feel horrible. took a test, negative :( don't know what this is! I want a lil baby so bad, me and my husband want nothing more and it's all i think about! should I wait a while and take another test??